unhappy_idle

I have a vaccum leak caused by a cracked PCV valve grommet. In fact I there is only 3/4 piece of the grommet on the manifold. And its almost as hard as stone.

Any ideas on how to soften it up to remove it without damaging the manifold or dropping it in?

I also notices that the bushings on the engine mount torque strut near the firewall seem to be worn, as there is a lot of play if I push/pull on the torque arm. Since it is loose it seems like with just the removal of the bolts I will be able to remove the torque strut arm. The question I have , is that with the new bushings in, to put in the bolts will I need to jack up the engine.

Is it safe to just use a floor jack and a wood plank on the jack, place under the pan and the work the jack to push the engine up. And do I have to loosen all the engine mounts to replace this torque mount?

Thanks in advance