hello all, I have recently purchased a used 2015 bruin 350 2wd. The machine was won during winter, tore up a crankcase seal. I bought it this way. I was told it was a rear seal… surprise! So I took it to my local shop and they replaced the seal and assured me everything else was fine. Well it ran rough and sounded metallic but I was assured this was normal. It seemed to be slipping (clutch) so I took the belt cover off, cleaned it out (grease/oil on the belt) and it helped a little bit but still sounded bad. I drove it for about a week (I live in the high arctic and it is a car substitute) and found someone else who has one. I listened to theirs and it was much quieter and seemed to have more power. Mine is gutless! Won’t spin the tires even in snow and has difficulty going up even moderate grades on good roads. So I pulled it into the shed, checked the timing and the valve clearance and they are fine. I also stuffed and telescopic magnet into the oil dipstick hole and came back with a lot of beach size magnetic metal. So, I have now pulled the motor out and plan on opening up the top end tomorrow. Any thoughts or advice? I think when the previous owners took out the seal the engine was deprived of oil and caused damage. I hope it’s only rings. Thanks!