Oil pressure question w/'85 Spider?

[JeffreyOlson@domain.elided]

Here are the factory oil pressure limitations w/oil at 90 degrees C:

800-900 rpm = 7.1 to 14.2 psi
5000 rpm = 49.8 to 71.1 psi

A friend's Spider with a little over 1,000 miles on new pistons, liners, and 
connecting rod bearings, the oil pressure was right within limits with the oil 
pressure guage responding normally to changes in engine rpm and temperature.

Suddenly the oil pressure guage is now nearly stationary regardless of rpm or 
temperature and the needle stays slightly above the middle of the scale
(approximately 57+ psi).

Have not yet checked the oil pressure at the sending unit.  Maybe a filter and 
oil change thinking the combination of new and old parts in the 106K mile 
engine may have produced a lot of metal in the filter during the break-in 
period?  The oil sump and oil pump were both removed, cleaned, and reinstalled 
with no problems during the recent engine work.

A little concerned since this seems very uncharacteristic, call me paranoid!

Any ideas or comments?

Thanks!

Jeff
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