Thanks all for the info.
Once i've tried a few things i'll look at EP's 1st, then the paracorr if needed.
Thanks Martin, about the same age as my scope, to maybe the same focuser...although a dual speed would be nice.
I feel a case of equipment-mania trying to take hold
Looks like my collimation is out so that's the 1st job, before trying any new toys.