Ignition shear bolts

[John Mitchell <jmitch@snet.net>]

Hi, Im about ready to light the torch!  I'm removing the steering column 
to replace the bushes in my 76 TR6 and have gotten to where the tell me 
to use a chisel to unscrew the shear bolts holding the ignition lock.   
I cant believe it's possible through the speedo opening.  Anybody have a 
better way.  Do I really need to use shear bolts when I put it back 
together.  Thanks in advance for any advise  John Mitchell   1976 TR6 
BRG struggling in CT