John,
When I first went to carbons, they gave me fits too. The Goldtips that you have in 35/55 will probably work fine in your bow, or with enough point weight the 55/75s could probably be made to work. Please don't think I am insulting your intelligence, but almost everyone I know, myself included, had the same problem when switching to carbon shafts. One of the main problem is nock fit. Carbon nocks are made to fit compound strings and are usually way too tight on a traditional 12 strand string. I use a little sandpaper on them until they fit just right. That helps a lot. Next, don't be afraid to really weight up the tip. I usually start out with at least 200 grains of total weight up front, with full length shafts. Carbons recover from paradox very quickly. If I were trying to tune your set up I would start with those 35/55s at about 30 inches and between 175gr. and 200gr. up front. Good luck and let me know if I can help at all.