I have a '93 XR650L, with a supertrapp exhaust, K&N air filter, and the emissions equipment removed using a kit. The airbox also has holes cut in the sides and screen riveted over them. I had heard that the stock carb severely limits the performance of this bike, and have been looking at the mikuni flatslide listed on XR's Only's website. I've asked several experts their opinion, but they all answered that "yes the stock carb limits performance, but you should buy our super-duper 500.00 carb to replace it." I'm not looking at spending that much, as the carb I'm looking at only runs about 300.00. Any thoughts on this would be welcome.