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15 FC250 Lacks Power

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I just picked up a 2015 FC250 and it has no power.  My 06 CRF250R has way more power than this thing.  It seems to run fine but, for example, it barely pulls the front wheel up in 3rd gear. It was rebuilt (Vertex piston, OEM valves, timing chain) at 100 hrs and has around 120 on it now.  I checked the normal stuff, timing is on, valve clearance in spec, fuel and air filters are clean.  Any ideas?

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I'll try the tps. My buddy has the harness. No smoke on startup. I will disable the decompression and see what sort of compression it has.

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It has the map switch. Tried all the settings without any luck. Ohmed out the switch to ensure it was working.

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Solved! The previous owner had twice the recommended amount of oil in it.  He said something about overfilling it when I bought it. I should've looked at that first 

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