The question was : when I adjust the POTY for optimum SWR moving plates does the circulation affected?
Yes. PLEASE DO NOT ADJUST LIKE THIS FOR MINIMUM VSWR. HOW MANY TIMES MUST I REPEAT THIS ? The same point comes up again and again and again. If you tune like that the chances are you will produce a linear antenna. HF DXCC types old antenna lore does not apply! POTY is a complex antenna.
Now to get those resonances right build accurately. Exactly 3.00 mm spacing. No deviations in sizes, correct connector type. To tune if required use a vector network analyser and look and what's happening on a Smith Chart. If that's too difficult, perhaps ask someone for help. Really it needs the proper tools. If you really can't find a VNWA find where it is matching. If it's high gently bend all four corners towards the reflector just a little. Do it evenly and symmetrically. See what happens. If it's really far off frequency the dimensions are not correct.
Here is mine - before and after.