The SVD mount WILL fit if your scope has the smaller front aperature like the 4X24 scopes have, although it technically isn't correct. The Romanian mount has cutouts which allow this, but if you have the larger front area like mine in the picture, then you will need the correct AK mount which I showed you. I also have a WASR-10 that currently has the Rommie 4X24 on it with the original SVD mount. If you use the SVD mount the iron sights are pretty much unusable as the scope is almost touching the rear tangent, which blocks your view somewhat. Eye relief is also an issue sometimes. Remember, these bottom mounts are interchangable, so if you get a good deal on a SVD scope, you can swap the bottom piece cheaply. SOG currently has the Rommies for $89 if you buy 2 or more. Please note that they do not have illuminated reticles though.
As for your stopping halfway issue, both of my Rommies (and my SAIGA) were like that when they were new, even with the AK mounts. I think they just need a little wearing in before they operate smoothly. I got bold and used a rubber mallet to persuade it to go on, but do this at your own risk...