It is. I've robbed all the parts I can from my piggyback 1 and I am one nylon bushing away from not being able to use it anymore.Stepping out of your comfort zone can be tough!
I have to say that rcbs has the most outstanding customer service I've ever dealt with in my life. The same dude has answered the phone every time I've called them for the last 25 years. I sent them my shell plates from my piggyback 1 and they drilled them all for my piggyback 2 at no charge about 17 years ago.