[Johnson] Adventurer Question

[Bruce Hudler WK3A]

Hi all,I've been working on two of these lately. One was working pretty well right from the Hamfest boneyard, the other is missing some parts. After resurrecting these little TX doing the usual part replacing, they both have made some QSO's on 80m and 40m with about 30 watts or so. Fun... the reverse beacon spots me in EU on 40m !The question is as I move up in frequency, to output drops off significantly to the point that I am wondering if this is normal. 20m drops off to about 20 watts, then down to barely anything out on 10m.Using crystal control, 7 mhz  x2 x3 x4 for the upper bands. Tubes swapped and also tube tester says OK. Were they all like this or something needing further troubleshooting?