Hi, My kitchen sink is installed in a very old (~25 years) countertop which is not in the best of shape. The back of the sink is no longer securely attached to the countertop because the "wood" in the counter is soft and crumbling (a leak around the base of the faucet allowed water to get underneath the lip of the sink and destroy the counter). I caulked the lip of the sink to prevent any further water from entering that area (I also fixed the faucet leak). I'm wondering if anyone else has had a similar issue of trying to adhere a sink to a less-than-pristine countertop and if you have any ideas of how best to re-adhere it. I was thinking of injecting some construction adhesive under the lip, but that would make it almost impossible to remove the sink in the future. Any other ideas? Thank you in advance to anyone that can offer any suggestions.