I did my flandria bermuda yesterday........it was a PITA.she had rust scale in the tank......50/50 muriatic acid and water first then rinsed and a quick rinse with phosphoric acid,,drained.a heat gun to dry that..rinse again with boiling water and drain then 30 mins with a heat gun shoved down the fill neck.....me and my sons took turns...it got smoking hot..then we treated it........I didnt bother removing anything we just kept flipping the bike over and around till we hit all sides and top and bottom several times then drained it....she looks good...I figure she should be ready to use in a few day......now my shoulder is acting up from manhandling a bike around......shoulda hung it with a nylon strap