I'm glad to hear that the fuel tank is clean.
A tad more important is the cleanliness of the crankshaft sludge traps. If these are not clean, your engine will self destruct, usually in under 500 miles. Spares are virtually impossible, due to the number of fools who have ignored warnings such as this.
36 4G, 37 VH, 54 KH(A), 75 Healey 1000/4, 52/53 ex ISDT KHA (project).
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist once more - but not Machine Registrar.