You could test the ADSR by plugging in the Square Waveform from your LFO into the IN socket on your ADSR, the light should flash.
A - Set Fully left
D - Set half way
S - Set Half way
R - Set anywhere really but a Fully left will be fine
Make the LFO slow, fingers crossed the ADSR light flashes.
Enjoy your spare HP, don't rush to fill every last space, this is not like filling sticker books. Resist the urge to 'complete' your rack, its never complete so just relax.