How much clearance do you have between the antenna tips and your pushrods? I don't have the manual handy at the moment, but I know there's supposed to be a minimum clearance of around 1/2" to an inch between them and any metal parts to prevent interference. It seems like yours are really close.

EDIT: I had a similar situation on my mid star with everything packed in pretty tight. I ended up mounting one antenna vertically on the fuse former behind the fuel tank and the other antenna was horizontal on the left side of the fuse to keep it away from the throttle linkage in order to get the proper antenna clearance.