Have husqvarna 450 rancher and need some help with it. It starts and runs fine. Maybe a little sluggish when pulling the trigger, but not bad. TAC shows idle around 3000rpm and full throttle is 9500-10,000. Problem is there is absolutely no power if trying to cut. Will barely pull the chain on a 4" piece of ash. New carb, spent some time trying to adjust it to no avail. Replaced fuel filter. Fuel is new and runs fine in my other Husq 450. Checked exaust and spark arrester, completely clean. Just about out of ideas before i take it to someone else to fix. Any ideas? thanks in advance.