From what ive heard the success injection unit has had some problem with the piston coming down to slow and not injecting the material fast enough. i believe they had some sort of conversion or fix for this problem but im not sure, just what ive heard through the grape vine. You may want to look...
Ive been using onion paper with a regular inkjet printer covered in clear self cure acrylic for a couple of year now and it has been working just fine. You can also buy very thin paper from your local ups store that will turn invisible after curing it that works well also, it cost about 10 cents...