I know the spring seats are on the soft side (I think
@Philia_Bear saw this and nodded in general agreement) so I've just ordered new seats and strut bearings and misc hardware.
@Philia_Bear also suggested maybe it
IS ignition, so to err on the safe side I've also ordered a new cap and rotor and I've bought a set of OEM spark plugs. I run iridium plugs and have done for ages, so I don't think they're the issue as they've never given me any trouble before, but in the interests of experimental
control I'll do it anyway. The cap and rotor are about 2.5 years old so maybe it's time for freshies anyway.