Sorry for the large interval between updates, but time is scarce and these parts are complex. I have been working but I'd rather hang on till there is more stuff for a decent update. Thank you zero. Ah, so that's what they are making. Thanks mate. I don't have much trouble with the countersinks to be honest. In places where there are many screws (like on one side of the intake for example), I start all the screws off first before driving them home just to avoid having to stress any of the opposite screws. Thanks yogi. I get all my alu from Action aluminium in Dandenong. They also have stores in Thomastown and Bayswater. We're all waiting to see the result. Thanks Bill. Thanks guys.