dose anyone have any good info on getting more out of the stock 30cc engine. I tried to look around online for some tips to get more out of these engines but are quite vague. I used to be big on nitro but tired of all the tuning. but their was lots of little things you could do to get some power, knife and tear drop the rod and knife the crank. is their much we can do to these engines or dose it just have to be scraped and start with a different engine all together.