Thank you Jose. Yes this problem affects my cge pro for a different reason and I cannot use centering or multi target sequences as a result. I have been pro actively explaining this and doing tests in many threads. First I did it with words. Then pseudocode. Then manual tests. And finally with Python code. The performance with my cge pro was dramatically better, with convergence to arc second level in two or three tries.
All it requires is solve and slew. Sync is not needed but can be performed at the end as an option.
If there are still questions on how and why it works I can explain it yet again. But anyone with questions please review my posts and test reports and logs first. It really really should not be hard to understand.
Frank