Missing 3rd on 904 trans

So I realized I haven't updated my struggles for a while and figured I'd catch those interested up. From a stop maybe one out of ten starts, I'll actually get first gear (even with the shifter in first). Normally I'm starting in second. When I shift from second to third it takes 2-3 business days to grab third. Occasionally, it won't grab third and i have to shift it to neutral and click it back to D and it'll grab third. I'm going to pull the pan and valve body this weekend and try and go over everything once again and try and find something I missed.