My only negative experience with many 1R stems is that a NOS failed, or cra cked just below the C plastic insert on the bar clamp. Fortunately happe ned only a mile from home without any mishap.
On another note, I was pleased to inspect an original Colnago ridden and pr esented by Saronni to a shop owner in the Tuscany region of Italy this afte rnoon
Enjoying a wonderful bike tour of the Tuscany region with my wife this week !!!
Regards,
Kevin Kruger - temporarily in Italy