If you have never heard of Tokyo Mods I just found out first hand that they do exactly what they say they do when the work on your carb. The Beta was in need of love and care so I have a friend that recommended them for the FC on that Master Beta. Damn strait they did and awesome job on the rebuild and mod. Pricey but I am 100% in full support of them. First off they mod the return spring and accelerator pump with their own stuff, replace all parts etc. and give you a bag of the stuff they replaced. Basically a complete rebuild/clean, new jets and replace worn out stuff. My slider $104.00 part was showing wear on the teflon so its a call, "hey this is worn pretty bad and we recommend you replace it" ouch!!! Thats a bunch of coin, "we will give it to you at cost $65.00 and throw in a new float needle valve as well, because the tip is a little iffy"... I'll take it! So, I dropped 280 bucks and it was well worth the money. $199.00 just for them to do the mod but mine needed some love also. My Beta is back together and runs like a bat out of hell, almost plug and play... Slight adjustments with flex needle and idle but Oh My.... I am one happy Mo-Fo....