Wow! So cool, you did your own diy which is good at least it saved you some money plus you get to really know your motorbike very well.
If ever you will go on long rides try wearing a back support clothing or girdles will also help a lot for your posture while driving.
I wear that too when me and hubby would go on our bike road trips on separate motorbikes. I had that feeling too when we did our first road trip, two hours one way.
So after that experience I researched and found some back support clothing.
Enjoy the ride and be safe!
Yes I do wear a back support now, it's helping a lot indeed.
That's good, happy riding!