I'd like to know why you want to run clen during PCT?? The anti-catabolic effects of clen are over rated, so thats not the reason I hope....
If you are wanting to take clen during PCT to lose fat after a bulking cycle, then thats a big no no..... The reason is because you would end up losing most of your gains from the bulker because you switched into cutting too fast.... You need to do your PCT and get your body stabalized at it's new weight with it's new mass, before cutting.
Punk, if you have any specific questions or need help, you know how to get a hold of me.