Yes the pegs are great, they have a nice gently smooth spring action, with plenty of grip and soft jaws won't leave an indent -
might be a tad wider/fatter than Wolf style, the ends could be squared off if required on a bench sander.
With you regarding PULL Saws - I'm annoyed it took 65 years of being on planet earth before discovering them !
great piece of kit, to date I have an Irwin crude plastic handled version, similar to Xacto saw size -
but have tried brother in laws full blown Japanese with wooden, leather bound handles,
and they are incredibly sharp and accurate, but a bit on the big size for table top use.
Re Riva handling, I've read somewhere the full size hulls do not have the usual spray rails etc,
it's perfect straight off Carlo's drawing board with no mods, therefore if the models are to scale and accuarate,
you would think they would perform the same.
I have seen the ARTF ready built versions that were popular around ten years ago, digging in on turns - they're not scale hulls.
A thought - going back to silly fast power boating days, if the model digs in, move the centre of gravity backwards to help lift the bow,
your extensive weight savings bound to help in lowering the hulls cg., it may also need moving backwards a tad ?
worth bearing in mind while you've got your pull saw to hand - is there plenty of room to move the lipo's etc backwards.
My offshore racer struggled in the turns, to the extent of barrel rolling sideways, moving all the essentials back as far as possible
made a huge difference to handling, may of even added a chunk of lead at the transom.
cheers Paul