I am ordering an rg3 tripple clamp set for my 01 CR250. I have to order the steering stem and lower bearing seperate. I know that stuff has to be pressed on, but is that somthing I can do myself in the garage with out a press? Also, anyone use the 20mm offset rather than the stock 24mm offset? I ride alot of woods and tight trails. I was wondering what the 20mm offset would do for me.