HPI Engine Mounts for HPI Rush
 

I bought an OS Max .15 CV-X and istalled the HPI Engine Mounts (cheaper ones, no fins) and i got them onto the engine just fine, but when I put the engine onto the chassis i need biggerscrew heads. What is the best way to do this? Cap head screw with washer or one of those capheads with the washer molded on?
Screw dimensions are M3x12mm or even M3x15mm would work.

HPI Engine Mounts for HPI Rush
 

Another question:

At the HPI website, they have a pic of the heat sink engine mounts with cap head screws. So i'm wondering if the engine sits directly on the chassis or maybe it sits on the aluminum plate that the .15FE sat on. If it sits on the plate the cap srews will work.

http://www.hpiracing.com/Merchant2/g...00001/A915.jpg