I’ve ordered some just for fun as I reckon I have cure the problem though I’m not going to water test it because if it leaks I’m just gonna want to set light to it.
I’ve undone all 10 Alan bolts securing the heater box and lifted it enough to get some clear sealer under it.
Long pipe on the end of the sealant nozzle directing it to the area by taping it to a long implement sorted it.
Very pleased since yesterday I wasn’t going to bother
