Bout to hit 4k mile mark.. Dealer said it's gonna cost me an arm and a leg. ($$$) to do this service which include engine oil + oil filter change. Clean and lube my chain. Etc.. Typical service.. "Check everything". Is it EXTREMELY necessary to do this Throttle Body sync? I mean I do slightly have a "loopy" idle when I start the bike up cold but not when its already warmed up and I'm at a red light or stop. I can easily do my engine oil and filter change. ($70 of materials from Walmart or something) and I already have chain lube at home (PJ1). What do y'all think?