As promised, here's a pic of one of the offending protruberances. sorry about the quality, but the postman (remember him?) let me down re my camera so I resorted to my phone. Hopefully you'll be able to discern enough to form an opinion. This is one of about a dozen that I've spotted, and all have formed on internodes where there is little or no bud growth. This one has taken over a week to develop from a slight bump to the monster you see before you- pretty slothful given that we're into week 5 of 12/12. her sister shows no similar signs. Any suggestions welcome. Thanx for persevering.