Motor had sufficient power and ran really well prior to pull down but was a little smokey. The piston did clean up well with some kero and a paint brush so assume damage was light. The new briggs 2100 series looks a nice motor and can be bought for around $300 but that would spoil the fun of the rebuild and its keeping my son and I busy. If it does not work out its no big loss. Need to make a valve spring depressor next and work on that while we wait for oil seals. While I remember the rings I have received have an oil ring, a square section ring and a ring with a 45 degree angle cut on one side only. Does anybody know which order this ring would fit???? Can forward photo if required.