I switched from mod to stock a few years back, i found it the best decision of my trials career. Everything seems loads smaller and i just seemed to improves at 3x the rate i did on a mod, weather it was a phsycological block in sense of progression i dont know, either way round i got better ! I would also recommend a lower bb bike to start off with, i started with a pure and it got me far. Hope this has helped. Thanks, Mike.