J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment mast foot

Hull number is 283.

I think it is one of the earlier models because the hole is very large.

The former owner give us some little blocs to put around the mast, in order to fill the gap. But it seems strange to me, because theses little hard blocs are making hard pressure at the contacts points. Moreover, the deck mast foot seems already stressed, there is little cracks. I think that the pressure from the blocks will worsen the cracks.
A picture is better than words :


Then we wrap it in a special mast foot tape in order to waterproof the mast foot, but it is not perfect, there is water leak while raining.

So, I am looking for a better system.
I will look at spartite and other mast boot. We want something that can be remove easily because we will probably dismast next fall to change pulleys in mast head (there are old pulley for cable halyard but the current halyard are ropes, not cable, so there is a lot of rubbing).

(Please correct me if I use bad words, because I am not familiar with english marine vocabulary !!)