I'd expect a quick call to WR would clear up most questions.
Based on "where there is smoke there is fire," I expect there is some level of unreliability among Brit single triggers. However, having used a Lard trigger extensively and had a lengthy visit with the out-worker who made the Lard, I'd expect it to be very reliable.
A few years ago a couple of us made up a WR droplock valuation chart. If we can nail down the original quality level and current condition level I'll post a valuation - Brand Value level 2 for WR - Original Quality grade X - Current Condition Y = $ZZZZZZ.