Dear Madhav,As far as I can see this is a problem with the font Sanskrit 2003 and it can't be solved without modifying the font but I think modifying a font is prohibited under copyright law.
We do not know about this licensing stuff, but the Sanskrit 2003 font is made available freely to anyone to use.
With kind regards,
Swami Satchidananda
Omkarananda Ashram Himalayas
Muni-ki-reti, Rishikesh, India