22 lb is a little low for a hot idle, but probably sufficient. My old gal, at 177K can go down to 25 lbs on a really hot day with old oil in her (10w-30).
Of course, as soon as the RPM'* go up the pressure climbs to about 40 lb. On a really cold morning, when the oil is like molasses, the pressure may climb to 65-70 before the oil warms up and thins out.
While 22 lbs. can startle a nit-picker like me, it really is most sufficent to keep the oil reaching the lifters and rocker arms.
What is your pressure around 2,000 RPM? If it is 30 or better, you will be just fine.
2001 SSEi- black; stock 92K
1995 Vette; Competition Yellow; stock; 38K