BY, curious what main jet you used and main nozzle?
opsled, correct. The stock carb works fine, no reason to replace and lose the oil injection. And I agree on changing crank seals. These sleds are FORTY years old!
However, there were some sleds that ran terrible with the stock carb, like the butterfly carbs on stock 1980 SRX 440 for example.
golf t comes to mind. i have used screws, bolts and tree branches.
Quick Update - Tried the 0-0 tube and 6DH4 needle. It definitely did not take off as well at lower rpm. Tried original needle in the 0-0 tube. Maybe a little better than when paired with 6DH4 needle. Tried the Q-2 tube with 6DH4 needle. This seems to be the best combination I have. There could be a better setup, but I am leaving it like this. It works pretty good for me. The temp at the time was about 20* and my elevation is around 800 ft. I am also using the 35 pilot & 230 main.
Born, So here I am with this same problem dogging out when coming off the idle to mid range rpm. Just so I know for sure... your "Q2" tube is referring to the needle jet in which the needle moves up and down. My needle jet (tube) is stamped with "159Q0". Is your tube then stamped just Q-2 or are there other numbers with it? I'm thinking that my problem lies more with the needle and jet rather than thinking that switching my 30 pilot to a 35 is going to be of any benefit. I'm not seeing anything by looking at spark plug either.