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Sorry to hear that you forced to sell you airplane. I am not in the market, but this aircraft seems like a pretty good deal. Terry, you mention price drop in case something needs to be done with the engine. If you are saying that because it has been sitting so long, I would not consider that to be very much, if any, risk. It is a Rotax 912ULS and in my experience, they are not like other engines. They can sit for long periods of time without much problem. The reasons are many but the big reason is that the crankcase has no direct venting. The venting is done through the dry sump oil reservoir and as long as the oil reservoir has oil in it, it will act like a P-trap which prevents outside atmosphere (ie moisture) from being a problem in the crankcase. This protects the crankshaft, camshaft, bearings, etc. You will rarely find any corrosion in a 912. The only outside atmosphere interface is through the intake and exhaust but there is rarely any negative result from that area due to the cylinders being aluminum which is coated Nikasil which is very resistant to corrosion. Also the pistons are very close tolerance to the cylinders so very little will get by the pistons and rings to the crankcase.
If I was buying it, I would look at the condition of the external rubber components and look to see if they are cracked and/or hard. Also the carb floats could be a problem so they should be inspected. Still, all this would be not all that expensive to deal with. Seems like a pretty good buy to me.