Yes Krishan, I've had it, as documented in this thread:
http://www.iceinspace.com.au/forum/s...d.php?t=124484
Look at the image and animation I did of it - look familiar?
I fixed it by going to an OAG. Wonderful solution; I'd never go back to a guidescope now. Even short FL really do benefit from OAG, and for long FL, it's THE way to go. I really don't understand why many people are reticent to use OAG, it's easy, logical, and gives superb results. The only real key is to get a good guide camera (I use an ASI120MM).