Remember...in most states, the HOA members are “personally” liable for monetary damages if they are show to be liable for the cause or {not giving you relief} for a dangerous situation.
Use the word “liability” and put the burden on them to take action!!!
Our board members here in Florida can be held personally liable for up to $5,000.
Another thing you might bring up on your letter...remind them that if something were to happen and they are held liable...the association’s insurance will go sky high on renewal!!!!!