Hi Kaz, ABA has been out of the air since early October - hopefully back this week. The mechanical fuel pump failed - and as the O-290-3 is the only engine to ever use that type of pump it has been a pain.
I do most of my other flying in Neil's C180 you have seen which I love - and we use C172R and S models with the Scouts - they are really quite good machines but the weight carrying capability has been eroded significantly since the earlier models.