Cracked furler: The one on my Mac was cracked the day I bought it 9 yrs ago. It was about a foot up from the bottom. Hasn't gotten worse, so I've just kept using it.
I plan to check and monitor the mast tabs, but I typically have bungies/ratchet straps around it to hold it in place.
Something you might consider, if you haven't already, is the box stores sell 2 inch wide velcro that has opposite 'hooks' (not sure what they are called) on each side, so you can use scissors and cut off a foot, then wrap it around things and attach it to itself. If I have the furler on the mast traveling, it works great to secure things in place.
Be cautious that very similar looking boxes have the hook on one side and TAPE on the other, so that doesn't work as well.
An added benefit: If you wear double knit shorts, you can stick these on your shorts until you are ready for them..................... Of course, anytime you get close to them, they stick to lines, your shorts, or towels, etc. (grin)
A product Mgr where I used to work claimed our company had the best welders in the world! He said they could run a perfect weld between two pieces of steel and not get any penetration on either part!!!!!!!!!!!!!!!!!!!!