1990 wb40

[gasparillaglass]

I have a 1990 wb40 bird im going to have the front oil seal replaced
dose anyone know approx. the cost of this??
I already had the oil pan gasket replaced it cost me $700 with oil and
filter
my name is Jamie Brandt any info would be great


Im also having a air leak problem
it seems its taking longer to fill and release the spring brake it will
release at about 110 psi
if my air spring is leaking will this affect that??