Zenith convergence problem

[Tony V]

Hi Gang,
I'm the one that ended up with the 1969 Zenith floormodel color tv on ebay from PA mentioned in another thread that i now cant locate. After getting it home i managed to get it presentable both cosmetically and as far as playing. The only problem i have with it now is that the convergence wont adjust on either the right or left side except for the blue. Top and bottom adjust fine. This is the model that the adjustments for the convergence are behind the speaker grill on the front. The chassis number is 16Z7C50ZW and the model number is Z4541-5. Its the model with power tuning but no space command. I would appreciate any input to help get the picture how it should be on this one as otherwise it has a great picture and sound as most Zenith's do. Heres a before ebay pic of it and will be posting the after pic once it get it straightened out.
Thanks,
Tony