Langcourts, a good reputation? No!
Apart from being well known for hacking 1mm off the deck height (measure your cylinders, R spec cylinders are marked "H" and should be 86.3mm tall. The SE/SP cylinders are marked "L" and should be 86.5mm tall) their plating quality is a little questionable at times.

165's sounds very lean if you're not running the power jets.
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Please do not PM me technical questions, if you can't find it on the Forum start a thread