I would like to see you repost this in 6 months. If your engine is still running OK, then you will have set some kind of record. Your 14x7 3 blader just has to be working that engine very hard. In fact it is well up into the range for a 2 bldr. I'd be satisfied with a 13x8 3 bldr, except that it probably would look a bit small. I recommend that you phone Horizon's repair shop and discuss this with them.........Cheers