i'm about to become the proud new owner of a 94 600R. it's a strong runner with a brand new top end, high(er) compression piston, and it's been bored, but i'm not sure how much. i'm not crazy about the engine mods, but i was wondering if there are any special precaustion i should take. also, how much advantage is there in a pumper carb over a well tuned stock carb? also, which pumper is best? and do they have any effect on uel economy, good or bad?