How to improve sustain on SV-1

[jpng]

I noticed the sustain note on my SV-1 is very short, especially true when playing with piano sound only.
Is there a way I can improve (prolong) the sustain note on SV-1?

[peterepin]

This can happen if the pedal doesn't go all the way down - so you only get half-damping.
This happens if the base of the pedal gets cracked, which is always the case with standard DS2H.