by Pauli72 » Wed Feb 29, 2012 11:00 pm
It's not a silly question.
I assume from the term "nose block", you are refering to either the engine cowling, the spinnner/prop assembly, or an angle adjustable thrust bearing assembly, for rubber powered flight.
I have never seen an aftermarket, pre-formed wooden cowl, or spinner hub assy. geared toward 500 series planes, or any other Guillow's plane for that matter. Unlike the vast array of aftermarket upgrade modification kits availabe for almost every specific plastic model, you are left to your own devises if you choose not to use the supplied plastic parts in the Guillows box.
So... I guess it's a yes on the scratch-build for each iteration question..... That's the nice thing about building in balsa, If you screw up...balsa is realtively cheap. Just make another one.
Best of luck.