Also the oil return pipe inside the top of the tank is further back than one I saw on a YouTube video but guess it's not a problem? Sorry about poor photo.
Brian
The pipe provides a visual of the oil return, very useful for start up. As long as you get a healthy jet of oil out of it, it's fine. Its tube so can be moved if you want it to... but the main thing is just seeing the return flow and it being higher than the oil level.
A mate forgot the buffer pad and managed to split a seam on his super rocket tank, tightening it up.
The earlier plunger oil and petrol tanks were bolted up solid without rubber mounts and the pre swing arm fuel tanks in particular were very prone to splitting and is mentioned in many period tests.
The move to rubber mounting was very successful and the fuel tank mountings didn't really change much from '54 to 72.
I've lost count of the fuel tank splits my ZB has suffered. We've even added the underside studs to improve.
But putting together a basket case swing arm bike missing some of the oil tank fittings can be a challenge though as bits are typically lost