If they are the older springs/washer that came with the block from a year ago or more they are probably not the newer springs that apply more pressure. If you bought the block recently they should be the lga1700 springs.Currently using the LGA 1700 contract frame as well as the springs/metal washers that came with the cpu block . Checking voltages now, however on the asus z790 strix E gaming boards no real Vcore in the bios unless im blind .
"Due to the newly developed, larger socket, slight adjustments to our HEATKILLER IV mounting kit were necessary. We used all technical data available in order to produce the new mounting kit for the Alder Lake processors. Especially in the area of contact pressure, a lot has changed. For this, we again relied on our proven Easy Mount system in order to comply with the manufacturer’s specifications. A quick check in our lab showed that our existing mounting kit also makes a flawless mounting possible for the time being. However, this does not achieve the maximum contact pressure and sacrifices some performance.
Just in time for the INTEL release, you can buy a conversion kit for the LGA1700 socket in our store "
The matching WATERCOOL HEATKILLER IV conversion kits for the latest Intel Alder Lake generation, are available in our store from Thursday.
They use to sell the lga 1700 springs/washer kit Watercool HEATKILLER IV Upgrade Kit for Intel LGA 1700
Also if not using a backplate on the HK site they say
"INTEL LGA-1700 (For optimal performance, we recommend the backplate with part number: 10014. )"
Hochwertiges Umrüstkit für unsere Heatkiller IV Prozessorkühler. Passend für alle aktuellen Intel Prozessoren.
Backplate zur idealen Lastverteilung für Intel Mainstream Prozessoren. Maximiert die optimale Leistung des Heatkiller IV Wasserkühlers.
I would try adding a 1mm washer to increase mounting pressure and if temps drop 10-15c plus like they did for me you know what the issue is.