May seem strange since the GT40 is actually at a paint shop, but got an air conditioning pro to have a look at aircon system. His shed was next door, so quite convenient. The air con still worked, not amazingly cold, I was hopefuly of better and some of the flexible hose work looked dodgey. I won't go into all the details, but flexible hosework was terrible, it had rub throughs, twists in hoses and just butt ugly at the most obvious places.
So it was no surprise to me that 3 x flexible hoses had to be replaced. Plus to connect onto the Low Pressure access port required removing lead from No.1 cylinder...argh, now that was a surprise...luckily on a flexible hose that was being replaced, so easily fixed. And another surprise, the dryer receiver was also missing an o-ring and the system only contained roughly 10% of required gas. /ubbthreads/images/graemlins/shocked.gif
AU$407 later and I had a much better aircon system. At idle it puts out a freezing cold -3 degree C(20 degrees ambient outside) and has a nice 12 month warranty, free check-up and special dye, so leak detection is easy with right gear. /ubbthreads/images/graemlins/smile.gif How quick the money goes. /ubbthreads/images/graemlins/frown.gif
It was also recommended to me to rubber mount the condenser. It mounts directly to the body and not to the radiator, so rubber mounting it is probably not a bad idea.