1983 yamaha venture royale 
I am new here... currently checking valves ... bike has 63000 miles, and i don't think the valves have been done in a long time. 
1. When I follow the yamaha manual's instructions and bring it to top dead center, or even anywhere near there, I can not get a gauge in to find the gap- could they seriously be that tight? 
2. I am very confused about the valve shim tools available.  I ordered one, following a thread on here saying that I could use a suzuki/yamaha tool.  It is not here yet, but after reading some other threads I fear I have ordered an unnecessary piece of steel.  What tool is commonly used... has anybody ever made one? 
3. I have seen the great play by play on here on how to do this job, but the measurement task is a little fuzzy in the reading.  Does anybody know of a video or pictures?  Sorry, lots of pictures is how I learn.  
Thanks a lot.