[AT] OT: keyless drill chuck

[H. L. Staples]

A new Ryobi 3/8" drill had a keyless chuck that would not tighten enough to
hold a drill bit. I changed the original chuck to a Jacobs keyless with no
improvement in grip. 
 
With two pairs of large pliers I can tighten the chuck to hold Ok. It would
be easier to go with a key type chuck.
 
Are there any quality 3/8" keyless chucks available, that will hold a bit
securely ?  
 
All help appreciated.
 
H. L. Staples
McLoud, Oklahoma
USA