I have been a 100% pellet guy since 2007 and have never looked back.
But...I can not see any advantage to converting a Weber to pellets!!
Charcoal/chunks is a wonderful way to cook.
Really hard to improve on that, IMHO,
I would "pass" on any such conversion.
If ya wanna cook with pellets--just buy a pellet cooker--don't "Jerry Rig"!
"Flirtin' with Disaster" BBQ Team (RETIRED)
FBA and KCBS Cook and Judge.
Former owner of a WSM, a Smokey Joe, a Charbroil Commercial gasser (junk), the legendary "StudeDera", a FEC100, a Fast Eddy PG500, and Sherman the Wonder Trailer.
Now cooking with a Yoder YS640
Proud Pellet guy cooking on real wood.