Re- Special tool for crankshaft seal.
I bought mine from Stein Dinse in Germany, part number 14927100-Z in stock for 27.80 Euros ex vat and P and P.
Ordered and delivered 2 days later.
Now put 260 miles with 60 odd on very wet roads covered in mud and gravel and all is well.
Decided to re- torque the cylinder heads now and was surprised how much they needed nipping up, plus re set the tappets and all sounds good.