I thought I would post this to help anyone that has one of the Geo Knight Jetpress 14 Clamshell:
Here is a link to the manual that was hard for me to find:
www.jcimpressivedesigns.com/jp14man.pdf
Portability: I bought my Jetpress 14 for $100.00 off from eBay. I bought it with plans of it being a smaller press and more portable to take to shows. Well to say the least it is 59lbs, and not so portable.
Alignment: When I bought the press the heat platen was out of alignment. If you read the users manual in the troubleshooting section it explains how to realign it. It is a very simple process.
Gas Spring: When I got mine the gas spring was shot. Geo Knight sells the gas springs for the unit for $20.00. But I received the press on the weekend and was too impatient to wait and get a gas spring. I took the old spring off and went to Autozone. After about 20 minutes I had the correct gas spring. Anybody looking to go to Autozone to get one they are made by Mighty Lift! and is item number: F95754 and the UPC: 037495957540. You will notice that it has different ends on it, I'll explain that in a bit. The black part of the Gas Spring is slightly longer and has absolutely no conflict or effect. The ends on the old Gas Spring unscrew from the Gas Spring fairly easily. Now we get to the new Gas Spring: Never use any pliers on the Gas Sprint itself. If you put pliers on the ends that is OK. Well the one end on the silver shaft of the new gas spring did come off with my bare hands. I had to really grip the silver shaft and twist the end off. They use thread sealant or locktite to hold the ends on. Now on the other end it was on there very tightly. So I took a screwdriver and popped out the metal clip on the end. Then I took a dremel tool with a cut off wheel and cut chunks out of the plastic end until I knew that I was close to the threads. I went to unscrew the end and it came right off with ease. All you have to do now is screw the ends that were on the gas spring on the press onto the new gas spring and install it. It works beautifully. Of course you could just order the gas spring from Geo Knight with the ends and save yourself some work. But honestly this was quick and simple enough and I didn't have to wait. The gas spring from Autozone cost: $19.99.
Cleaning: I was searching the internet for a platen cleaner and came across the site that claims they sell a heat press platen cleaner called: EZ Off. Well upon further research it turns out that EZ Off is just a hot iron cleaner. So I drove down to my local Wal-Mart and went to the section where they sell irons and didn't find EZ Off but I did find a brand called Faultless Hot Iron Cleaner. You have to use it when the heat press is hot. So I heated the heat press to about 200 degrees F, and put the cleaner on an old sock and cleaned in small circles as the instructions said. It came out beautiful.
I hope this bit of info helps anyone out with one of these older presses. I did notice on my press that the very front of the press seems to be cooler, possible cold spots? I'll have to look-up how to test for cold spots next. I do have an infrared thermometer, maybe I'll check that next. Good luck to anyone with one of these old presses. Unfortunately for me it isn't light and portable as I had hoped it would be. Oh well it is still a nice press.
-Jim
Some help for anyone with a Jetpress 14 Clamshell 
