I had an issue a few weeks a go where I found the rear shock mounts don't line up. I spoke to marlin who said I needed spacers however with the required spacers there was not enough thread left on marlins thread adaptor to protrude through the nut as you can see below
What I ended up doing was remaking the threaded adaptor with a longer thread for the shock. I turned down a 7/8 whit worth high tensile bolt to make the adaptor
As shown below
The lower shock mount looks like this now
I had to use a larger spacer on top to bring the shock out a little to square it up
With everything all bolted up the rose joints allow to shock to move. I know people have said about bolts bending but using spacers should stop this as the bolt will have to stretch through the spacer to actually bend. And all bolts are 1/2 unf and high tensile