Thank you all for the replies.
Originally posted by JohnBuckner
Many highwing kits and ARF's have the firewall installed so the down and right thrust are provided for when you install the mount. Because of this the crank shaft will protrude out a scale cowling to far to the right so the mount is slide over to the left a bit so the prop shaft will be centered in the cowl but still be angled and provide right thrust.
John 
Thanks for the explanation.
Originally posted by Highlander
I usually put a filter between the tank and the engine , its simple to diconnet there and hook to fuel supply
Highlander
That sounds a good idea. I would need access to the filter anyway.