I'm interested in these improvements too, and hope some can be
applied to other models. I don't have a 5065A, nor do I expect to
ever get one, but I do have three identical old Efratom units.
Whether it's worthwhile to modify any Rb units also depends on
whether it's possible to rejuvenate their Rb lamps, as discussed here
a number of times, so that they can be maintained virtually indefinitely.
Ed
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