I bought this Coleman 201 recently. The main issue with it was the NRV not sealing. It appears that oil used on the pump cup had hardened inside the NRV preventing it from sealing. Cleaning the NRV in situ didn’t work on this one, but after removal of the NRV for a long soak in degreaser plus a new fuel cap washer, it’s running well.
Very nice example, the one I've got works superbly, i love the bulge globe on the 201, gives it stylish looks.