Lifting transformers with a CAT 322. How much can I trust the load tables?

[IamBruce_Driver]

I'm currently using a Cat 322 for some precision lifting, specifically picking heavy transformers off trailers. I've been studying the official load tables pretty closely.

The manual says not to exceed 87% for hydraulic limits and 75% for tipping limits. However, my bucket alone weighs about 2,300 lbs.

I have a few questions for the experienced operators here:

• The "Bucket Factor": When the table gives a lift capacity, is that on top of the bucket weight, or do I need to subtract my 2,300 lb bucket from that number to find my actual lifting limit?
• Safety Margin: In your experience, are these table values "set in stone," or is there usually a little bit of a cushion? Since I'm moving expensive, precision goods, how much "feel" should I have for these numbers?
• The "Bind" Scenario: If I get into a pinch and need just a little bit more juice, can I expect the machine to give me anything extra, or do the hydraulics usually cut out right at that 87% mark?

I've got the education and the background for spec'ing loads, but I've never pushed this specific machine to its absolute limit with "fragile" cargo. I'd rather ask now than find out the hard way while a transformer is mid-air.

Any tips on strategy for these heavy precision lifts would be great. Thanks!