Wow, after 3 cans your high side should be in the 150-250 range, depending on temperature. R-134a will have higher pressures.
If your air is cold then I question your gauges as I can't imagine the air being cold with a high side pressure in the 60's.........
No orifice tube on these, they use an expansion valve. Yours will be located behind the glove box.
How much oil did you add to the system? With R134a I think the R4 compressor calls for Pag-150 [150 is viscosity].

__________________
Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John