Oil battery indicator

[BeetOls]

sirs,

my TFR has been through a lot the past month -- a lot in terms of rebuilding, and so far is doing good; replaced rings, valve guides, seals, etc.; now it's virtually smokeless

I just noticed that every morning, the oil and battery indicators take some time to go off, at times reaching approximately a minute before they do; this means that for that span of time, the engine idles a bit higher, until the lights go off.

Now, what i do is slightly step on the accel. pedal to make it go off quickly

This happens lang after parking over night, no hard starting whatsoever

is this normal? does it simply come with aging?

TIA