Hi Couger,
yep, stock tail but the second. Erosion they produced with beefed up first two ribs. I have so far seen no problems, note though it is not overpowered, I kept to the recommended motor and I take care not to carry out steep dives with a high energy pull out. I use much bigger movements on the elevator, for taxing and take off lots of up elevator with lots of expo. I can then switch to a lower rate for General flying. It really is a bit of a ***** cat once it's set up to suit you. It stalls, if you can call it a stall, by sort of wafting along descending slowly. However as I said I keep away from severe high energy turns and try to fly in a scale sort of way.
Hope all goes well with yours.
al