My findings on the drop-in; fits the stock nicely but the underlug is a little too large and the wedge pin wouldn't go in the fore end slot, a little opening up the lug with a file corrected this. The underlug is a little deep and partially blocked the ramrod channel, the ramrod wouldn't make it past the lug, again some filing was in order. I took some metal off the bottom of the lug and round the corners of the lug and the ramrod jag so they could slide past each other and not catch on any square edges, problem solved.
The ramrod it typical of mass produced stuff, lots of runout and unpinned jags, it was also too big in diameter to go through the pipes easily. I chucked the ramrod up in my drill and sanded it down to a good fit for the pipes. I pinned both jags on the ends just to be on the safe side. I stained the ramrod with leather dye to match my TC stock and put the first coat of truoil on it this evening.
It is going to rain tomorrow, I finished up at dark this evening so it may be Thursday before I try er out.