normally when I run into things I can't play during recording, I will just break it into small enough pieces for me to play, then stitch it together. I don't like this I just want songs to be done fast. this last time, I tried practicing the parts till I could play them; it inflated production by 10 days, and I got 3/4 of them. this also sucks but I did improve my playing. I was wondering how you handle this kinda thing
it sounds like you are on the right track