Railed dust covers for WE AK
 

Anyone have any experience with railed dust covers for the WE PMC AK?

I have some regular AEG dust covers and they all seem to be slightly too short for the WE, except an old Tokyo Marui one IIRC (?), so I'm concerned about the various railed top covers I see.

I'm most interested in the TWI one (Zenit Б-33 clone), but info on the LCT one is also appreciated.