I only picked up my 8000 mile 172 cup on saturday (well delighted) but I have been browsing this forum for a few weeks as I knew I was buying this car, I have seen several threads regarding the engine mount knocking in low gears, accelerating, decelerating etc and guess what I have a knock also

the thing is though the knocking that I am getting is not while doing any of the above it is while stationary and the car is just idleing!! not all the time just every now and again and if I dab the throttle ie rev the engine the knocking goes away momentarily. other than this the car behaves fine no knocking on acceleration etc. so basically will this be the engine mount problem also? as it does seem to be coming from the vacinity of the offside engine mount.
cheers for any thoughts/input.