Thanks Elango for your response
I saw the resolution suggested in the links given and found that utlimately the FontWeight property is being set using various values of FontWeights enum (e.g FontWeights.Thin, FontWeights.Light etc.)
I've already tried using "FontWeights" enum values, but it had no impact on the link content.
Is there any other way to make the font look thinner.
Thanks
Sach