First off hello I am obviously new here . I am dabbling in my first Kawasaki atv coming from Yamaha’s . I have a 2018 bf 750 eps that I bought new a year or so ago and the thing has never run right it randomly goes into high idle enough that it moves on its own and grind between shifts when it idles up. After doing a bit of digging I noticed the front plug looks a bit lean and the back one looks black ( I changed the plugs a while back just to eliminate that and same thing) I did a compression and got 65 on the back cylinder and 61 on the front. All the connections look good I tested the iac and it checked out (dealership replaced it anyway) . When the quad is cold it kind of stumbles a bit to on acceleration. The colder it is outside the worst it is ( we’re in Alberta so it gets pretty cold) the quad is dead stock except for hand warmers , has 340km and 50 hrs on it . I use it mostly for plowing snow and it got a bunch of hours at the dealer trying to sort it out. The dealer and Kawasaki are absolute deadbeats on the issue and said pretty much it is what it is. Looking for some direction and what I should be looking at here to possibly sort the issue out without shooting the parts cannon at it. Thanks in advance for any advice.