trial to full conversion ...

hello everyone, i started promoting only revs at 90% of my sponsors, but i see that it wasnt the best turn ... i love revs you know why, but last times i am having really bad ratio converting from trials to full memberships ... i am doing sales to brazzers, mofos, boobcruiser, hentaiboss and other sponsors based on nats, but i am converting about 1 of 5 joins from trial to full, and thats really very bad ratio ... how is it on your side? can you tell me which sponsor is doing good for you? can you please tell me if promo materials does have anything to do with trial to full ratios and what promo to use then? i remember when i was doing this biz in 06/07 there was about every second trial converted to full and i was using always only mine thumbs and links, now i am using only links and banners from sponsors, maybe thats the reason? ... thanks in advance for any reply and any hint where to send my traffic, but please no programs reps etc replies are needed, i know already that your program is converting the best nice weekend and wish you best with your sites!