Tuning it is actually a pain in the neck unless you have someone doing the work for you. After you have it tuned, you then have to try and match it. Tuning silicone is a huge pain. Lead isn't so bad but it does take a while on trial and error.
I prefer finding something that is close but lighter than what you want and then adding lead tape to take you the rest of the way.
4 x IG Prestige MP, 70 cm, 376 grams, 386 SW, ALU Power @50