I got thor t-30 boots and am having a serious problem up-shifting. I tried to raise the shifter up a notch but It doesnt clear the front sprocket cover. Is there an after market set up to fix this? My bike is a KFX 400

 

I had a problem shifting when i first got my MX Boots also. I just bought a different shifter with a shorter end. I believe it was an EMGO. I don't know how much room there is between the frame and the shifter on your fourwheeler, but you could always try to bend the end closer to the frame, or heat it up and smash it in a vice. I hope that helps...