I am having some trouble with pre-printed transfer, in the past I have only used transfers I have printed on my epson c88 I have a Presto Press and use best blanks transfer paper my pressure setting is set to 8 and I press my transfers at 400 degrees for 25 seconds they always come out perfect. I have just started using some pre-printed transfers from Pro World Inc they saY to press at medium pressure 385 degrees for 8 to 10 seconds I tried that and on some the transfer was not sticking so I upped the temp and time a bit I have tried all diff temps and all diff pressing times and I am still having the same problems on some of the transfers it is pressing to the shirt but then peeling off the shirt after it is pressed my thought on this one is that it is being pressed to long or to hot correct I then had some that did not stick at all and then I had some that stuck in some places but not in all - as these transfers run 2.00 to 3.00 a piece I am going through them like crazy and getting worried because I am buring money and have orders to fill and help or suggestions would be greatly appreciated also I am using 100% cotton shirts because I think the 50/50 's look to much like undershirts - thanks