Seems experimenting with carbs is a fun pass time for me. Having been in the small engine trade am well versed on Walbro and Tillotson carbs. Now that the Chinese have started making clone chainsaw parts I decided to gamble 15.95 shipped on a carb for an 041 Stihl. Seemed a good choice as the 041 is 61cc. Cobbled up a manifold for it and gave it a run. After a few tweeks on the hi/lo needles I had an excellent running gt5. Super clean carburation from idle to a much improved top end. No flats or 4 stroking and a perfect idle. Was really suprised at the throttle response. I expected it to maybe be an issue as the carb is 21mm. Pretty big for a stocker. However these type carbs run larger bores than a M/C type. Shortly after getting in a few hi speed runs the chain let go. I have gotten the NT carbs running pretty good, but there is no comparison to this carb. Time to repair the chain and figure out an air filter. I plan on ordering a couple of more and one for a Stihl 660 for the 90cc Stihl Frankenstein build. To heck with changing jets!! .