The DD Mod 12.0 is nice, but not worth the price tag. I would explore other FF Tube options before buying the DD. There is nothing wrong with the DD, but it cost too much for a pipe with some holes drilled into it.

JYD #123 The great one formerly known as Architect.

I am now a fictional British television police officer (currently a Detective Sgt) at Thames Valley Station. My governor is Detective Inspector Fred Thursday and it’s 1969.