I stopped in to send a PM to a member and didn't see any unanswered PM's but the boron question did come through my regular email and I responded.
That's the best way to reach me actually, an email to firstname.lastname@example.org
Basically my response to the boron issue is first do not let it freeze and try to store it at room temp. Cold weather can affect the mix and always close the nozzle tip after use.
Sometimes the compound won't flow properly due to a clogged nozzle. Remove it and run warm water through it until it's clear.
I have never added water to the mix but if a few drops increases the flow to a persons liking then go ahead and give it a try.
If a person feels they ended up with a lemon regarding any HA products they should contact me and we'll work it out.