Was the jiggler valve on the t-stat positioned at the highest point on the t-stat housing?

I've used both the Behr and Wahler t-stats in my 103 system. The Behr runs hotter even though both are rated 87C. Not saying this is how it always works - just what I've experienced.

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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"