FORM OF AMENDMENT NO. 2 TO AMENDED AND RESTATED CUSTOMER AGREEMENT

Exhibit 10.12(b)

FORM OF

AMENDMENT NO. 2

TO

AMENDED AND RESTATED CUSTOMER AGREEMENT

WHEREAS, XXXXXX XXXXXXX SPECTRUM SELECT L.P., a Delaware limited partnership (the “Customer”), and XXXXXX XXXXXXX & CO. INCORPORATED, formerly Xxxxxx Xxxxxxx XX Inc., a Delaware corporation, (the “Commodity Broker”) have agreed to amend the Amended and Restated Customer Agreement, dated as of the 16th day of October 2000 (the “Customer Agreement”), by and between the Customer and the Commodity Broker, to reflect the merger of Xxxxxx Xxxxxxx XX Inc. into Xxxxxx Xxxxxxx & Co. Incorporated, and to amend the rate of interest income in credited to the Customer’s account by the Commodity Broker. Terms used and not otherwise defined herein have the meanings ascribed to such terms in the Customer Agreement.

WHEREAS, all provisions contained in the Customer Agreement remain in full force and effect and are modified only to the extent necessary to provide for the amendments set forth below.

NOW, THEREFORE, the parties hereto hereby amend the Customer Agreement as follows:

1. Xxxxxx Xxxxxxx XX Inc. has been merged into Xxxxxx Xxxxxxx & Co. Incorporated and any references to “XXXX XXXXXX XXXXXXXX, INC.”, the predecessor to Xxxxxx Xxxxxxx XX Inc., shall mean “XXXXXX XXXXXXX & CO. INCORPORATED”.

2. The third sentence of Section 7 Investment of Customer Funds is deleted in its entirety and replaced with the following:

“Xxxxxx Xxxxxxx & Co. Incorporated will credit the Customer with interest income on 80% of the Customer’s Net Assets on deposit with Xxxxxx Xxxxxxx & Co. Incorporated at each month-end at the rate equal to the monthly average of the 4-Week U.S. Treasury xxxx discount rate during such month.”

3. This Amendment No. 2 shall be governed and construed under the laws of the State of New York.

IN WITNESS WHEREOF, this Amendment No. 2 to the Customer Agreement has been executed for and on behalf of the undersigned as of the [    ] day of [    ] 2007.

XXXXXX XXXXXXX SPECTRUM SELECT L.P.
By:		Demeter Management Corporation,
		General Partner
By:
		Name:
		Title:
XXXXXX XXXXXXX & CO INCORPORATED
By:
		Name:
		Title: