Steve Rasmussen
..... I'm hoping at least a one or more of my grandkids have enough interest that I get to make some of of these. It's on the list!
Puzzles are not everyone's cuppa cha, and Pottzy thinks he's everyone... however, if you get any of the grandkids interested, you'll be making puzzles for the rest of your life. 
A lot of people try the challenge, however, it it's too difficult they toss in the towel... and then you have your addicts.


 Steve Rasmussen
I was reviewing the solution pdf. Wouldn't it be a bit easier to drop the red piece in 1st and then install the green/gold pieces?
I'll have a go at that and see how it pans out.  Sometime moves that seem out of place are needed to permit subsequent flip/rotation.
Often there could be more than 1 solution, however, once I have one, I don't particularly go out and see if it's efficient or is there a better way.
However, in light of your suggestion, I will give it a try and if it works re-write the solution.
 

If your first cut is too short... Take the second cut from the longer end... LBD