Welcome Bike
Don't forget to post some pics of your K5.
Good luck with the head gasket.
Rhos you should see my workbench. It came from the science lab of an old school that was knocked down years ago. So god knows whats been spilt on it, it certainly looks battle scarred. I've added to it, same as you engine oil, fork oil and soldering burn marks etc.
I always think thats one of the nicest parts of a rebuild when all those polished, coated, painted bits start to go back together again and I do understand what you mean about engine rebuilds and money!!!
Hope you will post some pics of the rebuild.
Cheers
Grizzly