They should make it good. Hopefully it's just a bad gasket and not a warped case or cracked case. Triumph was always a decent scooter. I owned one and a BSA too. The Triumph was smoother because of the smaller bore and longer stroke. The BSA was faster in the quarter. It ate Sportsters up drag racing but the big bore and short stroke shook every finder loose headlight, tail light, nothing was safe from that quaking but the SOB ran. Lucas electrics were my main complaint.
Hope it goes well for you. Hang in there and don't take no guff from them.
