English ships and armaments in 1652 to 1654

I had spent a great deal of time in the past studying English ships during the First Anglo-Dutch War. The main problem with that period for me is ship armaments. I don't have that much trouble with having many ships with estimated dimensions based on the burden, but all my armaments in the past have been concocted. I had seen the gun lists from 1664 and later and those from Oppenheim. There are also a few tidbits in Brian Lavery's books, but the real armament information either does not exist or has not been found. We might argue that the Commonwealth, under Cromwell, was unconcerned with administration and did not keep records, although I am unconvinced. Does anyone have any idea about where to look?