I'm very sorry to read about your abundance of bad luck with this plant Jan , it doesn't seem to run to badly , yes it does run quite a bit better in one direction. I used to work very hard to even out the discrepancies only to make them run equally lousy in both directions , now I tune it to its best performance and let it go at that. I hope the seller made the damages right with you 😤
ps , I did have a chuckle with your remarks after the throttle lever broke off 🙄