MD GSP - I am an old owner, but not above listening to good advice; thanks.
I just finished cleaning and lubing (Slip 2000 Gun Lube) all three of my Parkers - one 20 ga VH on a 28 ga frame, a 20 and a 12 Repro. On both 20s, the fore ends snug up easily, but the 12 still takes some effort (not a good sign).
All three will accompany me on a dove hunt on a ranch just south of Hondo, Texas next weekend and I will see how the 12 holds up.
BTW, handling the circa 1900 VH with Damascus barrels and the 28 ga frame is like a magic wand! Brings back lots of teen age hunting memories and it locks up tight as a drum. I will definitely shoot it some next weekend if the white wings are flying low.