Hi Tiggy2:
Personally I think your decision to have the e-tube is the way I'd go, considering all the problems you've had to now and knowing how hamstrung you are having to force feed at regular feeding times. Time just doesn't allow for everything.
Here's the web site for the pork recipe. Instead of cutting it, I put it through the meat grinder, with extra fat - preferably pork if you can get it - if not use ghee.
I would then do what SCM suggested - run it through a food processor to make a good puree. Something I did with the medical syringes was to enlarge the holes 1/32 or 1/64 of an inch. Helps to relieve blockage when pushing the food out.
http://holisticat.com/en/raw-feeding/19-chunk.html
Here's a web site for those who are not familiar with e-tube feeding to have a look at and understand where we're coming from in regards this style of force feeding.
http://www.catinfo.org/?link=feedingtubes
Hope all this helps. If I can be of any further help, just let me know.