Well those readings are not that unusual , if you see it heading for 16' 17's 18's
then that R/R is going bad again.

When mine started going bad it was reading high 16's into mid 17's and sometimes low 18's

Other than that I'd say ride on man, the R/R's get hot always

 

Does anyone know of a heatsink one can retro fit to an original R/R ?

 

Years ago, I cut up an old computer cpu heatsink, used so heatsink compound on the backside then used a pair of zip ties to hold everything tight

 

Thanks for thr reply,
About 5 mins after I posted the question I had a moment of clarity ( rare these days ! ) and realised that almost any heat sink will do the job it's just a matter of getting it all to fit.
Have located a supplier of various sized heat sinks and will be adding one over the winter months.
I wish I had seen the original thread a while back as I just bought a new R/R and it isn;t much more in price for the heatsink type
Ahh well they say hindsight is an exact science.

 

And if you go that route you can get one with a 12v fan screwed onto it