Thanks for the response.
SpareParts; Not really a max effort although I plan to keep tweaking as I go.
Now would be the time for me to do it (change collector) if it made sense.
But by the time I get someone to do it and have them recoated, it's not going to be pocket change....

Mr P, I will pm you some specs.
I am curious on this, probably no point in fooling with collectors if tube size is not ideal as well.
If that turns out to be the case, it makes the decision easier.