Horiz osc question

[7"estatdef]

As I am working on this KCS-47 I'm have trouble getting the horizontal osc on the proper frequency. I locks nicely on twice and three times the frequency. So I got the bright idea to hookup a counter to the control grid of the 6BG6 just to see where it's at but I can't seem to get it to get a constance reading in that it won't settle down in one freqency. Is does the osc generate alot harmonics so the counter can't figure out which freq to lock onto?
Terry