Hi all, when i moved to my house approx 5 years ago we replaced the 3 port valve shortly after. I purchased a Honeywell copy and that didnt last long approx 1.5 years. Following that i decided to pay more for the honeywell but that didnt last long either (just shy of 3 years). The first time round i replaced the whole unit head and valve. The Second one (honeywell) was just the head. I noticed on the recent one there was a load of gunk that oozed from the motor onto the shaft and dried hard - like a resinous substance. Anyone else had bad experience with them?