AWA c3414 deep image colour

[richms]

Got one of these (NZ$10. so not a bad deal)

Anyway, it has one of the clicky tuners with a knob from 0 to 11 and U for the UHF.

Problem is that the tuning on those presets is all wrong. There is a knob in the middle of the clicky selector that seems to change the tuning but it doesnt go all the way to get me some channels.

Is it possible to retune these presets on it somehow by swapping components out or whatever to get it recieving all the channels that it should? I have a couple of modulators that are up on cable channels which I would like to be able to get on it if possible but thats not a major at the moment.