well sorry then sad that I have watched such 'experts' do video fix's as this on U-tube etc. and even advertise doing it and their company. still since you know best. a as to body filler not being up to it . i suggest you try it! it is after highly recommended for cars body work (...
cracked concrete( type) weights are best and easily fixed using car body repair kit eg plastic padding. mixed as a two pack and spread evenly over one surface and squeezed together. hold in place for 20 min's then its as new. fairly cheap too.
tub middle seal are often reused but...
