Senior 'stiff' to cock - any ideas?

[Shed tuner]

too much lateral play in the piston ? i.e undersize ?

[felix gunner]

Dunno ST, it's all original to the best of my knowledge and seems a lovely fit. I'm pretty sure it's just a lube issue as lovely and slick now.

[mrto]

Dunno ST, it's all original to the best of my knowledge and seems a lovely fit. I'm pretty sure it's just a lube issue as lovely and slick now.

I'm sure it's a lube issue,too had the same thing with most of my Seniors from time to time.

[felix gunner]

So what do others use for the innards? I moly the piston ring, smear the front inner cylinder, front of piston, spring/guide inside and out and drop the odd couple of drips of oil in. Diesels for ten or so but then OK. Soon seems to run dry though.